let oWrap = document.getElementsByClassName("shuffling-img");
let oShu = document.getElementsByClassName("shuffling");
let oUl = oWrap[0].getElementsByTagName("ul");
let aLi = oUl[0].querySelectorAll("li");
let clientWidth = oWrap[0].clientWidth;
let index = 0;

function banner(){
    index ++;
    if(index > aLi.length - 1){
        index = 0
    }
    let oLeft = "-" +(clientWidth * index) +"px";
    oUl[0].style.left = oLeft;
}

setInterval(banner,3000);


//  oShu.onmouseenter = function(){
//     console.log(1)
//     clearInterval(setInterval)
// }